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Finding the Third Proportional to 783.75 and 849

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Solution

The third proportional to 783.75 and 849 is: 919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.75 : 849 = 849 : x
  2. Step 2: Convert to fraction form
    783.75/849 = 849/x
  3. Step 3: Cross multiply
    783.75x = 849 × 849
  4. Step 4: Simplify right side
    783.75x = 720,801
  5. Step 5: Solve for x
    x = 720,801/783.75
  6. Step 6: Final answer
    x = 919.68

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.